To better understand the complicated interplay of different \(\chi ^{(3)}\)  phenomena, we performed 1D modeling of SC generation in 5mm of Te by solving the generalized nonlinear Schrodinger equation using the split-step Fourier method [1]}. Dispersion is taken from Ref. [2]}, and the absorption spectrum is calculated from the measured transmission data (Fig 1(d)). Third-order nonlinearities are accounted for with a nonlinear response function \(R(t) \propto n_{2,\textrm {eff}}\left[(1-f_R)\delta (t) + f_R h_R(t)\right]\) ,
where \(\delta (t)\)  represents the instantaneous nonlinear response, \(h_R(t)\)  gives the delayed Raman response, and \(f_R\)  is an empirical coefficient describing the strength of the Raman response. Self-steepening is also considered.
